Patent US4360640A successfully refreshed from Google Patents.
US4360640A
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Acrylic modified anionic water dispersible styrene allyl alcohol copolymers
Assignee: Valspar Corp
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Filing: 1981-06-17
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Granted: 1982-11-23
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Expires: 2001-06-17
Abstract
Abstract This invention provides a graft copolymer of at least one acrylic monomer and a random copolymer of a styrene and allyl alcohol, in which at least about 8 percent of the total weight of said graft copolymer is derived from acrylic acid, methacrylic acid, or both. It also provides anionic aqueous dispersions of such graft copolymers and coating compositions containing them.
Inventors
- 👤 Michael A. Tobias
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:30
CPC Classifications
C; C09; C09D; C09D151/00; C09D151/003; C08; C08F; C08F257/00; C08F257/02; C08F261/00; C08F261/02; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31692; Y10T428/31855; Y10T428/31938
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
59 words
A water dispersible graft copolymer of an acrylic monomer or monomers and a random copolymer of a styrene and between about 20 weight percent and 30 weight percent of the random copolymer of allyl alcohol, in which at least about 8 percent of the total weight of said graft copolymer is derived from acrylic acid, methacrylic acid, or both.
Claim 2
Dependent Claim
59 words
A water dispersible graft copolymer of an acrylic monomer or monomers and a random copolymer of a styrene and between about 20 weight percent and 30 weight percent of the random copolymer of allyl alcohol, in which at least about 8 percent of the total weight of said graft copolymer is derived from acrylic acid, methacrylic acid, or both.
Claim 3
Dependent Claim
15 words
The graft copolymer of claim 1, wherein the styrene in said random copolymer is styrene.
Claim 4
Dependent Claim
13 words
The graft copolymer of claim 2, wherein said acrylic monomer is methacrylic acid.
Claim 5
Dependent Claim
20 words
The graft copolymer of claim 2, wherein said acrylic monomers are methacrylic acid, methyl methacrylate, butyl acrylate, and hydroxyethyl methacrylate.
Claim 6
Dependent Claim
16 words
The graft copolymer of claim 2, wherein said acrylic monomers are methacrylic acid and butyl acrylate.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-11-22 | 1986-05-24 | 1986-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-11-22 | 1990-05-24 | 1990-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-11-22 | 1994-05-24 | 1994-11-23 | $7700.00 | Window Closed / Lapsed |